Casement-window adjuster.



No. floa.v PATBNTBD SEPT. 24, 1907.

G. L. wILKINs. GASBMENT WINDOW ADJUSTBB. APPLIUATIOI FILED IAY 8 1906 IlllllYTlED STATES PA EN@ FFI.

GEORGE L. WILKINS, 0F GHlCAGO, ILLINOIS.

CASEllJmNT-WNDOW ADJUSTER.

Specification of Letters Eatent.

Patented. Sept. 24, 190'?.

Application filed lilsy 8, 1906. Serial-No. 315,740.

My invention relates to mechanisms for operating" hinged windows, more especially easement windows but is also well adapted for operating transoms and other interior windows. l l

The` general object o the invention is 'to provide simple and effective means for operating a window from a point inside oi an inner window or screen.

A more specific object is to provide means whereby a window screen may be mounted in the easement inside of the window without interfering with the operation of the adjusting device, and to so construct the parts that the screen frame may t over the fulcrum block of the adjuster and the ulcrum block of the adjuster may fit over the operating leverclosely enough to prevent the entrance oi mosquitos, flies and otherl insects.

l' attain my objects by the mechanism illustrated in the accompanying drawings in which:

Figure l is a general iront view showing the parte assembled. Fig. 2 is a horizontal sectional view illustrating the operation of the parts. liig. 3 is a vertical sectional view taken on line 3-3 Fig. 2; and Fig. l is a horizontal sectional view taken on line 4-4 lFig. .1.

Similar letters refer to similar parts throughout the several views. f

' The form of device here illustrated is Vfor operating Casement windows; and in the drawings a represents the window casing or Casement which has a sill a and supports the window b, preferably by means of hinges/b.

The operating lever c is pivoted upon the fulc'ruur' pin d in the housing or iulcrum block e, the portion oi said lever adjacent to said pin being cylindrical and concentric therewith. Said housing which is secured to 'the sill 0./ by means of Ascrews or otherwise is so formed as to'make close Contact with the cylindrical portion of lever c without actually binding the same. The purposelin thus designing the parts is to render it possible to permit the lever to be swung through a maximum are for operating the Vwindow and yet maintain close enough contact between the cylindrical iulcrum portion oi the lever and the housing to eiectually exclude insects.'

Although the methodrofjconnecting the lever to the window is not an essential feature of the invention,

an advantageous form oi connection is illustrated in Figs. l and 2 in which a guide bar f is attached to the window and is slotted for receiving the head or pin c at the outer extremity of lever c. With this construction the head c is slidingly engaged withinbarf,l and thel rotation of said lever about its ulcrum pin d will 'swing the window to various positions as desired.

Although for the sake of simplicity I prefer a direct connection between the lever and the window as in the illustration lit is obvious that other connections such as compound levers or link motions might be employed.

A simple and convenient means for rotating the lever from a/ point inside of the housing-e is afforded by the handle c2 which in the present preferred design forms an integral part oi the lever.

' In order to provide means for retaining the window in any desired position a retaining device is empoly'ed, and While such retaining device might `assume various forms an advantageous` one is best illustrated in Fig. 4. There the cylindrical fulcrum portion of the lever c has a series of notches c3 adapted to receive the extremity of a detent g which is 'pivoted within `the housing and is influenced by means of a spring gito remain in engagement with the lever. Said detent is hand releasable by means or the projecting extremity g2.

An impenetrable member such as a second window or a window screen h is mounted within the easement inside of the window in such position as to be coincident with the plane oi the housing or fiilcrum block e. The screen frame is recessed at the bottom at h in such manner as to closely t over the housing e, and in order to facilitate the fitting of the screen frame to the housing it is desirable that said housing be rectangular in horizontal cross sections as shown in the drawings. It is also desirable that the width ofthe housing be approximately the same as the width oi the screen frame as indicated in Fig. 2.

VIn operation, when the screen frame is lowered to normal position as shown in- Fig. l it makes such close contact around the edges of housing e as to prevent the passage of insects and similarly the housing makes contact with the cylindrical' portion. of lever c. When it is desired to open or close the window it is merely necessary to release the detent g and by means of the handle c2 swing lever c to the proper position. By this -means the window may be swung to open, closed or intermediate positions without raising or removing the screen and without affording any apertures either 2 sesgos between the screen frame and the housing or between the housing and the operating lever through which insects may gain access to the building.

What I claim as new and desire to secure by Lettersv Patent is:

A Casement Window adjuster comprising a block adapted to be secured to a window-sil1, said block having an opening therethrough, a lever pivotally mounted in said opening, and constructed to practically close the same in all positions of adjustment, one end of said iever serving 10 n witness whereof, I have hereunto subscribed my 15 name in the presence of two witnesses.v

GEORGE L. WLKINS. Witnesses HOWARD M. Cox, CLARA J. Crrms'rtmsnl..V 

